1.Bluetooth name: Lenyes Air 83 2.Color: Black with digital display version 3.Bluetooth version: V5.1/JL6973D4 4.Bluetooth distance: 10M Supporting protocols: HFP, A2DP, HID, AVRCP, AVCTP, AVDTP, ACC, SBC Battery capacity: Charging compartment battery/300mAh (602030mAh with protective board) 5.Earphones 30mah * 2 (401010 with protective IC) 6.Playtime: 5-6H 7.Charging time of the charging compartment is 1.5H 8.Earphone charging for 1H, standby for 100H 9.Charging: 5V-1A 10.Charging case charges headphones 4-5 times 11.Speaker specifications: φ 13mm circular horn 12.Impedance: 32 Ω 13.Frequency response: 20hz-20Khz 14.Sensitivity: 96 ± 3dB 15.Product size: 80 * 52.5 * 33mm+195mm silicone 16.hanging rope 17.Bare metal net weight: 48.2g 18.Charging port: Type-c charging port 19. Cute pet appearance 20. Comes with silicone sleeve and lanyard, convenient to carry 21. Multi color options, customizable patterns, suitable for IP and DIY cases"